Presser-bar for flaming-machines



(No Model.)

G. E. NEWALL.

PRESSER BAR FOR PLANING MACHINES.

Patnted Mar.6,1883,.

mmmm mr. Washington. 0 a

UNITED STATES PATENT ()FFICE.

GEORGE E. NEWALL, OF FLINT, MIGHIGAN.

PRESSER-BAR FOR PLANlNG-MACHIN ES.

SPECIFICATION forming part of Letters Patent No. 273,587, clated March6, 1883. Application filed March 28, 1881. (No model.)

To all whom it may concern Be it known that I, GEORGE E. NEWALL, acitizen of the United States, residing at Flint, in the county ofGreuesee and State of Michigan, have invented certain new and usefulImprovements in Presser-Bars for Planing-Machines; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as Will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to letters or figures of reference markedthereon, which form a part of this specification.

This invention is in the nature of improvements upon thepressure-barcovered by United States Letters Patent No. 188,936, grantedto me the 27th day of March, 1877; and the invention consists, ashereinafter specifically set forth and claimed, in avertically-adjustable, but rigid and unyielding, presser-bar, withextended bearing-sections loosely attached thereto, each section havinga vertical movement independent of the others, combined with rubbercushions interposed between thepressurebar and bearing-sections for thepurpose of holding the bearing-sections in place and at the same timepermitting such sections to yield to, the surface of the lumber beingplaned.

In the drawings hereinbefore referred to, in the several figures ofwhich like parts are correspondingly designated, Figure 1 is alongitudinal section of part of a rotary planer provided with myimproved presser-bar. Fig. 2 is a perspective view of part of thepresserbar and bearing-sections detached, and Fig. 3

is a cross-section of the same.

The presser-bar as a whole I designate by the letter A. This bar isrigidly or unyieldingly secured in suitable housiugson the planerframein such manner (as by set-screws bearing upon the ends of the bar) as toadmit of the bar being adjusted vertically to provide for the planing oflumber of different thicknesses. The bar or rail a of this presser-barhas. its lower end formed with a dovetailed tenon, I), having theforwardly-inclined face b, the rearwardly-inclined lip b and therectangular recess b ,of substantially theform shown. Upon this dovetailare slid theindependentlymovable bearing-sections 0. These sections 0are each provided with a rearwardly-inclined lip, c, to engage and slideup and down the at the same time serve as most efficient pressers tokeep the lumber in place, the cushions exerting a downward pressure uponthe sections and holding them always in place.

By attaching the bearing-sections to the bar or rail aby thepeculiarities of dovetailing shown, I avoid the use ofa multiplicity ofbolts and provide a strong, cheap, and durable connection. Thesedovetail joints are sufliciently loose to permit of vertical play of thebearing-sections equal to the compressibility of the elastic cushions.

1 include any and all kinds of springs or yielding media in my termelastic cushions as hereinused, and hence do not limit my invention tothe one form ofruhberspring shown.

\Vhat I'claim is-- 1. The within-described improved presserbar forplaning-machines, the same consisting of the rigidly-held but adjustablebar a, having the tenon I), provided with the beveled face b, beveledlip b and recess b combined with the independcurly-movablebearing-sections 0, constructed with the lip c, recess 0 and lip 0 toengage the tenon, and elastic cushions interposed between said tenon andsections, substantially as and for the purpose set forth.

2. The combination, substantially as shown and described, of thepresser-bar tenon I), having the forwardly-inclined face b, therearwardly-inclined lip b and the rectangular recess b with thebearing-sections 0, provided with therearwardly-inclined lip c, toengage the tenon-face b, the recess 0 to engage the lip b and therectangular lip c to engage the recess b as and for the purpose setforth.

In testimony whereof I aliix my signature in presence of two witnesses.

GEO. E. NEWALL.

Witnesses:

FLORENCE S. TRACY, JOHN J. CARTON.

